Primus Trail II FG. Women's Fitness 3mm Natural Rubber Sole –

3mm Natural Rubber Sole – Flexible

The [classic] model uses cork cradles

and another

9mm Vibram Newflex Sole: Lightweight and durable with excellent ground feel

Soft formulation makes it easy to apply

Primus Trail II FG. Women's Fitness 3mm Natural Rubber Sole –Run Wild. Move Free. Primus Trail II FG Womens Barefoot Trail Shoes Explore with confidence in the Primus Trail II FG, Vivobarefoots best selling barefoot trail runner. Designed for natural movement on rugged terrain, this high performance sneaker blends lightweight flexibility with durability perfect for trail running, hiking, or everyday outdoor wear. Made from vegan friendly, recycled materials, it features a Firm Ground outsole for multi terrain